Variation of qualitative and quantitative traits in day old chick crossbred of Bangkok and Lohman laying hensYuli Frita Nuningtyas, Muhammad Halim Natsir, Veronica Margaretha Ani Nurgiartiningsih, Suci Puji Lestari and Muhamad Nadhif AthariqE3S Web Conf., 335 (2022) 00041DOI: https://doi.org/10.1051/e3sconf/202233500041